Algebra 1 | Math | Khan Academy
https://www.khanacademy.org/math/algebra
WEBThe Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a function; Exponential models; and Quadratic equations, functions, and graphs.
DA: 4 PA: 99 MOZ Rank: 73